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target: Fix 16-bit target ports for SET TARGET PORT GROUPS emulation
[linux/fpc-iii.git] / drivers / video / mb862xx / mb862xxfbdrv.c
blobf70bd63b01871223d74a2930bdd4823c27a120d7
1 /*
2 * drivers/mb862xx/mb862xxfb.c
3 *
4 * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver
5 *
6 * (C) 2008 Anatolij Gustschin <agust@denx.de>
7 * DENX Software Engineering
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 */
14
15 #undef DEBUG
16
17 #include <linux/fb.h>
18 #include <linux/delay.h>
19 #include <linux/uaccess.h>
20 #include <linux/init.h>
21 #include <linux/interrupt.h>
22 #include <linux/pci.h>
23 #if defined(CONFIG_OF)
24 #include <linux/of_platform.h>
25 #endif
26 #include "mb862xxfb.h"
27 #include "mb862xx_reg.h"
28
29 #define NR_PALETTE 256
30 #define MB862XX_MEM_SIZE 0x1000000
31 #define CORALP_MEM_SIZE 0x2000000
32 #define CARMINE_MEM_SIZE 0x8000000
33 #define DRV_NAME "mb862xxfb"
34
35 #if defined(CONFIG_SOCRATES)
36 static struct mb862xx_gc_mode socrates_gc_mode = {
37 /* Mode for Prime View PM070WL4 TFT LCD Panel */
38 { "800x480", 45, 800, 480, 40000, 86, 42, 33, 10, 128, 2, 0, 0, 0 },
39 /* 16 bits/pixel, 16MB, 133MHz, SDRAM memory mode value */
40 16, 0x1000000, GC_CCF_COT_133, 0x4157ba63
41 };
42 #endif
43
44 /* Helpers */
45 static inline int h_total(struct fb_var_screeninfo *var)
46 {
47 return var->xres + var->left_margin +
48 var->right_margin + var->hsync_len;
49 }
50
51 static inline int v_total(struct fb_var_screeninfo *var)
52 {
53 return var->yres + var->upper_margin +
54 var->lower_margin + var->vsync_len;
55 }
56
57 static inline int hsp(struct fb_var_screeninfo *var)
58 {
59 return var->xres + var->right_margin - 1;
60 }
61
62 static inline int vsp(struct fb_var_screeninfo *var)
63 {
64 return var->yres + var->lower_margin - 1;
65 }
66
67 static inline int d_pitch(struct fb_var_screeninfo *var)
68 {
69 return var->xres * var->bits_per_pixel / 8;
70 }
71
72 static inline unsigned int chan_to_field(unsigned int chan,
73 struct fb_bitfield *bf)
74 {
75 chan &= 0xffff;
76 chan >>= 16 - bf->length;
77 return chan << bf->offset;
78 }
79
80 static int mb862xxfb_setcolreg(unsigned regno,
81 unsigned red, unsigned green, unsigned blue,
82 unsigned transp, struct fb_info *info)
83 {
84 struct mb862xxfb_par *par = info->par;
85 unsigned int val;
86
87 switch (info->fix.visual) {
88 case FB_VISUAL_TRUECOLOR:
89 if (regno < 16) {
90 val = chan_to_field(red, &info->var.red);
91 val |= chan_to_field(green, &info->var.green);
92 val |= chan_to_field(blue, &info->var.blue);
93 par->pseudo_palette[regno] = val;
94 }
95 break;
96 case FB_VISUAL_PSEUDOCOLOR:
97 if (regno < 256) {
98 val = (red >> 8) << 16;
99 val |= (green >> 8) << 8;
100 val |= blue >> 8;
101 outreg(disp, GC_L0PAL0 + (regno * 4), val);
102 }
103 break;
104 default:
105 return 1; /* unsupported type */
106 }
107 return 0;
108 }
109
110 static int mb862xxfb_check_var(struct fb_var_screeninfo *var,
111 struct fb_info *fbi)
112 {
113 unsigned long tmp;
114
115 if (fbi->dev)
116 dev_dbg(fbi->dev, "%s\n", __func__);
117
118 /* check if these values fit into the registers */
119 if (var->hsync_len > 255 || var->vsync_len > 255)
120 return -EINVAL;
121
122 if ((var->xres + var->right_margin) >= 4096)
123 return -EINVAL;
124
125 if ((var->yres + var->lower_margin) > 4096)
126 return -EINVAL;
127
128 if (h_total(var) > 4096 || v_total(var) > 4096)
129 return -EINVAL;
130
131 if (var->xres_virtual > 4096 || var->yres_virtual > 4096)
132 return -EINVAL;
133
134 if (var->bits_per_pixel <= 8)
135 var->bits_per_pixel = 8;
136 else if (var->bits_per_pixel <= 16)
137 var->bits_per_pixel = 16;
138 else if (var->bits_per_pixel <= 32)
139 var->bits_per_pixel = 32;
140
141 /*
142 * can cope with 8,16 or 24/32bpp if resulting
143 * pitch is divisible by 64 without remainder
144 */
145 if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT) {
146 int r;
147
148 var->bits_per_pixel = 0;
149 do {
150 var->bits_per_pixel += 8;
151 r = d_pitch(&fbi->var) % GC_L0M_L0W_UNIT;
152 } while (r && var->bits_per_pixel <= 32);
153
154 if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT)
155 return -EINVAL;
156 }
157
158 /* line length is going to be 128 bit aligned */
159 tmp = (var->xres * var->bits_per_pixel) / 8;
160 if ((tmp & 15) != 0)
161 return -EINVAL;
162
163 /* set r/g/b positions and validate bpp */
164 switch (var->bits_per_pixel) {
165 case 8:
166 var->red.length = var->bits_per_pixel;
167 var->green.length = var->bits_per_pixel;
168 var->blue.length = var->bits_per_pixel;
169 var->red.offset = 0;
170 var->green.offset = 0;
171 var->blue.offset = 0;
172 var->transp.length = 0;
173 break;
174 case 16:
175 var->red.length = 5;
176 var->green.length = 5;
177 var->blue.length = 5;
178 var->red.offset = 10;
179 var->green.offset = 5;
180 var->blue.offset = 0;
181 var->transp.length = 0;
182 break;
183 case 24:
184 case 32:
185 var->transp.length = 8;
186 var->red.length = 8;
187 var->green.length = 8;
188 var->blue.length = 8;
189 var->transp.offset = 24;
190 var->red.offset = 16;
191 var->green.offset = 8;
192 var->blue.offset = 0;
193 break;
194 default:
195 return -EINVAL;
196 }
197 return 0;
198 }
199
200 /*
201 * set display parameters
202 */
203 static int mb862xxfb_set_par(struct fb_info *fbi)
204 {
205 struct mb862xxfb_par *par = fbi->par;
206 unsigned long reg, sc;
207
208 dev_dbg(par->dev, "%s\n", __func__);
209 if (par->type == BT_CORALP)
210 mb862xxfb_init_accel(fbi, fbi->var.xres);
211
212 if (par->pre_init)
213 return 0;
214
215 /* disp off */
216 reg = inreg(disp, GC_DCM1);
217 reg &= ~GC_DCM01_DEN;
218 outreg(disp, GC_DCM1, reg);
219
220 /* set display reference clock div. */
221 sc = par->refclk / (1000000 / fbi->var.pixclock) - 1;
222 reg = inreg(disp, GC_DCM1);
223 reg &= ~(GC_DCM01_CKS | GC_DCM01_RESV | GC_DCM01_SC);
224 reg |= sc << 8;
225 outreg(disp, GC_DCM1, reg);
226 dev_dbg(par->dev, "SC 0x%lx\n", sc);
227
228 /* disp dimension, format */
229 reg = pack(d_pitch(&fbi->var) / GC_L0M_L0W_UNIT,
230 (fbi->var.yres - 1));
231 if (fbi->var.bits_per_pixel == 16)
232 reg |= GC_L0M_L0C_16;
233 outreg(disp, GC_L0M, reg);
234
235 if (fbi->var.bits_per_pixel == 32) {
236 reg = inreg(disp, GC_L0EM);
237 outreg(disp, GC_L0EM, reg | GC_L0EM_L0EC_24);
238 }
239 outreg(disp, GC_WY_WX, 0);
240 reg = pack(fbi->var.yres - 1, fbi->var.xres);
241 outreg(disp, GC_WH_WW, reg);
242 outreg(disp, GC_L0OA0, 0);
243 outreg(disp, GC_L0DA0, 0);
244 outreg(disp, GC_L0DY_L0DX, 0);
245 outreg(disp, GC_L0WY_L0WX, 0);
246 outreg(disp, GC_L0WH_L0WW, reg);
247
248 /* both HW-cursors off */
249 reg = inreg(disp, GC_CPM_CUTC);
250 reg &= ~(GC_CPM_CEN0 | GC_CPM_CEN1);
251 outreg(disp, GC_CPM_CUTC, reg);
252
253 /* timings */
254 reg = pack(fbi->var.xres - 1, fbi->var.xres - 1);
255 outreg(disp, GC_HDB_HDP, reg);
256 reg = pack((fbi->var.yres - 1), vsp(&fbi->var));
257 outreg(disp, GC_VDP_VSP, reg);
258 reg = ((fbi->var.vsync_len - 1) << 24) |
259 pack((fbi->var.hsync_len - 1), hsp(&fbi->var));
260 outreg(disp, GC_VSW_HSW_HSP, reg);
261 outreg(disp, GC_HTP, pack(h_total(&fbi->var) - 1, 0));
262 outreg(disp, GC_VTR, pack(v_total(&fbi->var) - 1, 0));
263
264 /* display on */
265 reg = inreg(disp, GC_DCM1);
266 reg |= GC_DCM01_DEN | GC_DCM01_L0E;
267 reg &= ~GC_DCM01_ESY;
268 outreg(disp, GC_DCM1, reg);
269 return 0;
270 }
271
272 static int mb862xxfb_pan(struct fb_var_screeninfo *var,
273 struct fb_info *info)
274 {
275 struct mb862xxfb_par *par = info->par;
276 unsigned long reg;
277
278 reg = pack(var->yoffset, var->xoffset);
279 outreg(disp, GC_L0WY_L0WX, reg);
280
281 reg = pack(var->yres_virtual, var->xres_virtual);
282 outreg(disp, GC_L0WH_L0WW, reg);
283 return 0;
284 }
285
286 static int mb862xxfb_blank(int mode, struct fb_info *fbi)
287 {
288 struct mb862xxfb_par *par = fbi->par;
289 unsigned long reg;
290
291 dev_dbg(fbi->dev, "blank mode=%d\n", mode);
292
293 switch (mode) {
294 case FB_BLANK_POWERDOWN:
295 reg = inreg(disp, GC_DCM1);
296 reg &= ~GC_DCM01_DEN;
297 outreg(disp, GC_DCM1, reg);
298 break;
299 case FB_BLANK_UNBLANK:
300 reg = inreg(disp, GC_DCM1);
301 reg |= GC_DCM01_DEN;
302 outreg(disp, GC_DCM1, reg);
303 break;
304 case FB_BLANK_NORMAL:
305 case FB_BLANK_VSYNC_SUSPEND:
306 case FB_BLANK_HSYNC_SUSPEND:
307 default:
308 return 1;
309 }
310 return 0;
311 }
312
313 static int mb862xxfb_ioctl(struct fb_info *fbi, unsigned int cmd,
314 unsigned long arg)
315 {
316 struct mb862xxfb_par *par = fbi->par;
317 struct mb862xx_l1_cfg *l1_cfg = &par->l1_cfg;
318 void __user *argp = (void __user *)arg;
319 int *enable;
320 u32 l1em = 0;
321
322 switch (cmd) {
323 case MB862XX_L1_GET_CFG:
324 if (copy_to_user(argp, l1_cfg, sizeof(*l1_cfg)))
325 return -EFAULT;
326 break;
327 case MB862XX_L1_SET_CFG:
328 if (copy_from_user(l1_cfg, argp, sizeof(*l1_cfg)))
329 return -EFAULT;
330 if ((l1_cfg->sw >= l1_cfg->dw) && (l1_cfg->sh >= l1_cfg->dh)) {
331 /* downscaling */
332 outreg(cap, GC_CAP_CSC,
333 pack((l1_cfg->sh << 11) / l1_cfg->dh,
334 (l1_cfg->sw << 11) / l1_cfg->dw));
335 l1em = inreg(disp, GC_L1EM);
336 l1em &= ~GC_L1EM_DM;
337 } else if ((l1_cfg->sw <= l1_cfg->dw) &&
338 (l1_cfg->sh <= l1_cfg->dh)) {
339 /* upscaling */
340 outreg(cap, GC_CAP_CSC,
341 pack((l1_cfg->sh << 11) / l1_cfg->dh,
342 (l1_cfg->sw << 11) / l1_cfg->dw));
343 outreg(cap, GC_CAP_CMSS,
344 pack(l1_cfg->sw >> 1, l1_cfg->sh));
345 outreg(cap, GC_CAP_CMDS,
346 pack(l1_cfg->dw >> 1, l1_cfg->dh));
347 l1em = inreg(disp, GC_L1EM);
348 l1em |= GC_L1EM_DM;
349 }
350
351 if (l1_cfg->mirror) {
352 outreg(cap, GC_CAP_CBM,
353 inreg(cap, GC_CAP_CBM) | GC_CBM_HRV);
354 l1em |= l1_cfg->dw * 2 - 8;
355 } else {
356 outreg(cap, GC_CAP_CBM,
357 inreg(cap, GC_CAP_CBM) & ~GC_CBM_HRV);
358 l1em &= 0xffff0000;
359 }
360 outreg(disp, GC_L1EM, l1em);
361 break;
362 case MB862XX_L1_ENABLE:
363 enable = (int *)arg;
364 if (*enable) {
365 outreg(disp, GC_L1DA, par->cap_buf);
366 outreg(cap, GC_CAP_IMG_START,
367 pack(l1_cfg->sy >> 1, l1_cfg->sx));
368 outreg(cap, GC_CAP_IMG_END,
369 pack(l1_cfg->sh, l1_cfg->sw));
370 outreg(disp, GC_L1M, GC_L1M_16 | GC_L1M_YC | GC_L1M_CS |
371 (par->l1_stride << 16));
372 outreg(disp, GC_L1WY_L1WX,
373 pack(l1_cfg->dy, l1_cfg->dx));
374 outreg(disp, GC_L1WH_L1WW,
375 pack(l1_cfg->dh - 1, l1_cfg->dw));
376 outreg(disp, GC_DLS, 1);
377 outreg(cap, GC_CAP_VCM,
378 GC_VCM_VIE | GC_VCM_CM | GC_VCM_VS_PAL);
379 outreg(disp, GC_DCM1, inreg(disp, GC_DCM1) |
380 GC_DCM1_DEN | GC_DCM1_L1E);
381 } else {
382 outreg(cap, GC_CAP_VCM,
383 inreg(cap, GC_CAP_VCM) & ~GC_VCM_VIE);
384 outreg(disp, GC_DCM1,
385 inreg(disp, GC_DCM1) & ~GC_DCM1_L1E);
386 }
387 break;
388 case MB862XX_L1_CAP_CTL:
389 enable = (int *)arg;
390 if (*enable) {
391 outreg(cap, GC_CAP_VCM,
392 inreg(cap, GC_CAP_VCM) | GC_VCM_VIE);
393 } else {
394 outreg(cap, GC_CAP_VCM,
395 inreg(cap, GC_CAP_VCM) & ~GC_VCM_VIE);
396 }
397 break;
398 default:
399 return -EINVAL;
400 }
401 return 0;
402 }
403
404 /* framebuffer ops */
405 static struct fb_ops mb862xxfb_ops = {
406 .owner = THIS_MODULE,
407 .fb_check_var = mb862xxfb_check_var,
408 .fb_set_par = mb862xxfb_set_par,
409 .fb_setcolreg = mb862xxfb_setcolreg,
410 .fb_blank = mb862xxfb_blank,
411 .fb_pan_display = mb862xxfb_pan,
412 .fb_fillrect = cfb_fillrect,
413 .fb_copyarea = cfb_copyarea,
414 .fb_imageblit = cfb_imageblit,
415 .fb_ioctl = mb862xxfb_ioctl,
416 };
417
418 /* initialize fb_info data */
419 static int mb862xxfb_init_fbinfo(struct fb_info *fbi)
420 {
421 struct mb862xxfb_par *par = fbi->par;
422 struct mb862xx_gc_mode *mode = par->gc_mode;
423 unsigned long reg;
424 int stride;
425
426 fbi->fbops = &mb862xxfb_ops;
427 fbi->pseudo_palette = par->pseudo_palette;
428 fbi->screen_base = par->fb_base;
429 fbi->screen_size = par->mapped_vram;
430
431 strcpy(fbi->fix.id, DRV_NAME);
432 fbi->fix.smem_start = (unsigned long)par->fb_base_phys;
433 fbi->fix.mmio_start = (unsigned long)par->mmio_base_phys;
434 fbi->fix.mmio_len = par->mmio_len;
435 fbi->fix.accel = FB_ACCEL_NONE;
436 fbi->fix.type = FB_TYPE_PACKED_PIXELS;
437 fbi->fix.type_aux = 0;
438 fbi->fix.xpanstep = 1;
439 fbi->fix.ypanstep = 1;
440 fbi->fix.ywrapstep = 0;
441
442 reg = inreg(disp, GC_DCM1);
443 if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E) {
444 /* get the disp mode from active display cfg */
445 unsigned long sc = ((reg & GC_DCM01_SC) >> 8) + 1;
446 unsigned long hsp, vsp, ht, vt;
447
448 dev_dbg(par->dev, "using bootloader's disp. mode\n");
449 fbi->var.pixclock = (sc * 1000000) / par->refclk;
450 fbi->var.xres = (inreg(disp, GC_HDB_HDP) & 0x0fff) + 1;
451 reg = inreg(disp, GC_VDP_VSP);
452 fbi->var.yres = ((reg >> 16) & 0x0fff) + 1;
453 vsp = (reg & 0x0fff) + 1;
454 fbi->var.xres_virtual = fbi->var.xres;
455 fbi->var.yres_virtual = fbi->var.yres;
456 reg = inreg(disp, GC_L0EM);
457 if (reg & GC_L0EM_L0EC_24) {
458 fbi->var.bits_per_pixel = 32;
459 } else {
460 reg = inreg(disp, GC_L0M);
461 if (reg & GC_L0M_L0C_16)
462 fbi->var.bits_per_pixel = 16;
463 else
464 fbi->var.bits_per_pixel = 8;
465 }
466 reg = inreg(disp, GC_VSW_HSW_HSP);
467 fbi->var.hsync_len = ((reg & 0xff0000) >> 16) + 1;
468 fbi->var.vsync_len = ((reg & 0x3f000000) >> 24) + 1;
469 hsp = (reg & 0xffff) + 1;
470 ht = ((inreg(disp, GC_HTP) & 0xfff0000) >> 16) + 1;
471 fbi->var.right_margin = hsp - fbi->var.xres;
472 fbi->var.left_margin = ht - hsp - fbi->var.hsync_len;
473 vt = ((inreg(disp, GC_VTR) & 0xfff0000) >> 16) + 1;
474 fbi->var.lower_margin = vsp - fbi->var.yres;
475 fbi->var.upper_margin = vt - vsp - fbi->var.vsync_len;
476 } else if (mode) {
477 dev_dbg(par->dev, "using supplied mode\n");
478 fb_videomode_to_var(&fbi->var, (struct fb_videomode *)mode);
479 fbi->var.bits_per_pixel = mode->def_bpp ? mode->def_bpp : 8;
480 } else {
481 int ret;
482
483 ret = fb_find_mode(&fbi->var, fbi, "640x480-16@60",
484 NULL, 0, NULL, 16);
485 if (ret == 0 || ret == 4) {
486 dev_err(par->dev,
487 "failed to get initial mode\n");
488 return -EINVAL;
489 }
490 }
491
492 fbi->var.xoffset = 0;
493 fbi->var.yoffset = 0;
494 fbi->var.grayscale = 0;
495 fbi->var.nonstd = 0;
496 fbi->var.height = -1;
497 fbi->var.width = -1;
498 fbi->var.accel_flags = 0;
499 fbi->var.vmode = FB_VMODE_NONINTERLACED;
500 fbi->var.activate = FB_ACTIVATE_NOW;
501 fbi->flags = FBINFO_DEFAULT |
502 #ifdef __BIG_ENDIAN
503 FBINFO_FOREIGN_ENDIAN |
504 #endif
505 FBINFO_HWACCEL_XPAN |
506 FBINFO_HWACCEL_YPAN;
507
508 /* check and possibly fix bpp */
509 if ((fbi->fbops->fb_check_var)(&fbi->var, fbi))
510 dev_err(par->dev, "check_var() failed on initial setup?\n");
511
512 fbi->fix.visual = fbi->var.bits_per_pixel == 8 ?
513 FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
514 fbi->fix.line_length = (fbi->var.xres_virtual *
515 fbi->var.bits_per_pixel) / 8;
516 fbi->fix.smem_len = fbi->fix.line_length * fbi->var.yres_virtual;
517
518 /*
519 * reserve space for capture buffers and two cursors
520 * at the end of vram: 720x576 * 2 * 2.2 + 64x64 * 16.
521 */
522 par->cap_buf = par->mapped_vram - 0x1bd800 - 0x10000;
523 par->cap_len = 0x1bd800;
524 par->l1_cfg.sx = 0;
525 par->l1_cfg.sy = 0;
526 par->l1_cfg.sw = 720;
527 par->l1_cfg.sh = 576;
528 par->l1_cfg.dx = 0;
529 par->l1_cfg.dy = 0;
530 par->l1_cfg.dw = 720;
531 par->l1_cfg.dh = 576;
532 stride = par->l1_cfg.sw * (fbi->var.bits_per_pixel / 8);
533 par->l1_stride = stride / 64 + ((stride % 64) ? 1 : 0);
534 outreg(cap, GC_CAP_CBM, GC_CBM_OO | GC_CBM_CBST |
535 (par->l1_stride << 16));
536 outreg(cap, GC_CAP_CBOA, par->cap_buf);
537 outreg(cap, GC_CAP_CBLA, par->cap_buf + par->cap_len);
538 return 0;
539 }
540
541 /*
542 * show some display controller and cursor registers
543 */
544 static ssize_t mb862xxfb_show_dispregs(struct device *dev,
545 struct device_attribute *attr, char *buf)
546 {
547 struct fb_info *fbi = dev_get_drvdata(dev);
548 struct mb862xxfb_par *par = fbi->par;
549 char *ptr = buf;
550 unsigned int reg;
551
552 for (reg = GC_DCM0; reg <= GC_L0DY_L0DX; reg += 4)
553 ptr += sprintf(ptr, "%08x = %08x\n",
554 reg, inreg(disp, reg));
555
556 for (reg = GC_CPM_CUTC; reg <= GC_CUY1_CUX1; reg += 4)
557 ptr += sprintf(ptr, "%08x = %08x\n",
558 reg, inreg(disp, reg));
559
560 for (reg = GC_DCM1; reg <= GC_L0WH_L0WW; reg += 4)
561 ptr += sprintf(ptr, "%08x = %08x\n",
562 reg, inreg(disp, reg));
563
564 for (reg = 0x400; reg <= 0x410; reg += 4)
565 ptr += sprintf(ptr, "geo %08x = %08x\n",
566 reg, inreg(geo, reg));
567
568 for (reg = 0x400; reg <= 0x410; reg += 4)
569 ptr += sprintf(ptr, "draw %08x = %08x\n",
570 reg, inreg(draw, reg));
571
572 for (reg = 0x440; reg <= 0x450; reg += 4)
573 ptr += sprintf(ptr, "draw %08x = %08x\n",
574 reg, inreg(draw, reg));
575
576 return ptr - buf;
577 }
578
579 static DEVICE_ATTR(dispregs, 0444, mb862xxfb_show_dispregs, NULL);
580
581 irqreturn_t mb862xx_intr(int irq, void *dev_id)
582 {
583 struct mb862xxfb_par *par = (struct mb862xxfb_par *) dev_id;
584 unsigned long reg_ist, mask;
585
586 if (!par)
587 return IRQ_NONE;
588
589 if (par->type == BT_CARMINE) {
590 /* Get Interrupt Status */
591 reg_ist = inreg(ctrl, GC_CTRL_STATUS);
592 mask = inreg(ctrl, GC_CTRL_INT_MASK);
593 if (reg_ist == 0)
594 return IRQ_HANDLED;
595
596 reg_ist &= mask;
597 if (reg_ist == 0)
598 return IRQ_HANDLED;
599
600 /* Clear interrupt status */
601 outreg(ctrl, 0x0, reg_ist);
602 } else {
603 /* Get status */
604 reg_ist = inreg(host, GC_IST);
605 mask = inreg(host, GC_IMASK);
606
607 reg_ist &= mask;
608 if (reg_ist == 0)
609 return IRQ_HANDLED;
610
611 /* Clear status */
612 outreg(host, GC_IST, ~reg_ist);
613 }
614 return IRQ_HANDLED;
615 }
616
617 #if defined(CONFIG_FB_MB862XX_LIME)
618 /*
619 * GDC (Lime, Coral(B/Q), Mint, ...) on host bus
620 */
621 static int mb862xx_gdc_init(struct mb862xxfb_par *par)
622 {
623 unsigned long ccf, mmr;
624 unsigned long ver, rev;
625
626 if (!par)
627 return -ENODEV;
628
629 #if defined(CONFIG_FB_PRE_INIT_FB)
630 par->pre_init = 1;
631 #endif
632 par->host = par->mmio_base;
633 par->i2c = par->mmio_base + MB862XX_I2C_BASE;
634 par->disp = par->mmio_base + MB862XX_DISP_BASE;
635 par->cap = par->mmio_base + MB862XX_CAP_BASE;
636 par->draw = par->mmio_base + MB862XX_DRAW_BASE;
637 par->geo = par->mmio_base + MB862XX_GEO_BASE;
638 par->pio = par->mmio_base + MB862XX_PIO_BASE;
639
640 par->refclk = GC_DISP_REFCLK_400;
641
642 ver = inreg(host, GC_CID);
643 rev = inreg(pio, GC_REVISION);
644 if ((ver == 0x303) && (rev & 0xffffff00) == 0x20050100) {
645 dev_info(par->dev, "Fujitsu Lime v1.%d found\n",
646 (int)rev & 0xff);
647 par->type = BT_LIME;
648 ccf = par->gc_mode ? par->gc_mode->ccf : GC_CCF_COT_100;
649 mmr = par->gc_mode ? par->gc_mode->mmr : 0x414fb7f2;
650 } else {
651 dev_info(par->dev, "? GDC, CID/Rev.: 0x%lx/0x%lx \n", ver, rev);
652 return -ENODEV;
653 }
654
655 if (!par->pre_init) {
656 outreg(host, GC_CCF, ccf);
657 udelay(200);
658 outreg(host, GC_MMR, mmr);
659 udelay(10);
660 }
661
662 /* interrupt status */
663 outreg(host, GC_IST, 0);
664 outreg(host, GC_IMASK, GC_INT_EN);
665 return 0;
666 }
667
668 static int __devinit of_platform_mb862xx_probe(struct platform_device *ofdev)
669 {
670 struct device_node *np = ofdev->dev.of_node;
671 struct device *dev = &ofdev->dev;
672 struct mb862xxfb_par *par;
673 struct fb_info *info;
674 struct resource res;
675 resource_size_t res_size;
676 unsigned long ret = -ENODEV;
677
678 if (of_address_to_resource(np, 0, &res)) {
679 dev_err(dev, "Invalid address\n");
680 return -ENXIO;
681 }
682
683 info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev);
684 if (info == NULL) {
685 dev_err(dev, "cannot allocate framebuffer\n");
686 return -ENOMEM;
687 }
688
689 par = info->par;
690 par->info = info;
691 par->dev = dev;
692
693 par->irq = irq_of_parse_and_map(np, 0);
694 if (par->irq == NO_IRQ) {
695 dev_err(dev, "failed to map irq\n");
696 ret = -ENODEV;
697 goto fbrel;
698 }
699
700 res_size = 1 + res.end - res.start;
701 par->res = request_mem_region(res.start, res_size, DRV_NAME);
702 if (par->res == NULL) {
703 dev_err(dev, "Cannot claim framebuffer/mmio\n");
704 ret = -ENXIO;
705 goto irqdisp;
706 }
707
708 #if defined(CONFIG_SOCRATES)
709 par->gc_mode = &socrates_gc_mode;
710 #endif
711
712 par->fb_base_phys = res.start;
713 par->mmio_base_phys = res.start + MB862XX_MMIO_BASE;
714 par->mmio_len = MB862XX_MMIO_SIZE;
715 if (par->gc_mode)
716 par->mapped_vram = par->gc_mode->max_vram;
717 else
718 par->mapped_vram = MB862XX_MEM_SIZE;
719
720 par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram);
721 if (par->fb_base == NULL) {
722 dev_err(dev, "Cannot map framebuffer\n");
723 goto rel_reg;
724 }
725
726 par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len);
727 if (par->mmio_base == NULL) {
728 dev_err(dev, "Cannot map registers\n");
729 goto fb_unmap;
730 }
731
732 dev_dbg(dev, "fb phys 0x%llx 0x%lx\n",
733 (u64)par->fb_base_phys, (ulong)par->mapped_vram);
734 dev_dbg(dev, "mmio phys 0x%llx 0x%lx, (irq = %d)\n",
735 (u64)par->mmio_base_phys, (ulong)par->mmio_len, par->irq);
736
737 if (mb862xx_gdc_init(par))
738 goto io_unmap;
739
740 if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED,
741 DRV_NAME, (void *)par)) {
742 dev_err(dev, "Cannot request irq\n");
743 goto io_unmap;
744 }
745
746 mb862xxfb_init_fbinfo(info);
747
748 if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) {
749 dev_err(dev, "Could not allocate cmap for fb_info.\n");
750 goto free_irq;
751 }
752
753 if ((info->fbops->fb_set_par)(info))
754 dev_err(dev, "set_var() failed on initial setup?\n");
755
756 if (register_framebuffer(info)) {
757 dev_err(dev, "failed to register framebuffer\n");
758 goto rel_cmap;
759 }
760
761 dev_set_drvdata(dev, info);
762
763 if (device_create_file(dev, &dev_attr_dispregs))
764 dev_err(dev, "Can't create sysfs regdump file\n");
765 return 0;
766
767 rel_cmap:
768 fb_dealloc_cmap(&info->cmap);
769 free_irq:
770 outreg(host, GC_IMASK, 0);
771 free_irq(par->irq, (void *)par);
772 io_unmap:
773 iounmap(par->mmio_base);
774 fb_unmap:
775 iounmap(par->fb_base);
776 rel_reg:
777 release_mem_region(res.start, res_size);
778 irqdisp:
779 irq_dispose_mapping(par->irq);
780 fbrel:
781 dev_set_drvdata(dev, NULL);
782 framebuffer_release(info);
783 return ret;
784 }
785
786 static int __devexit of_platform_mb862xx_remove(struct platform_device *ofdev)
787 {
788 struct fb_info *fbi = dev_get_drvdata(&ofdev->dev);
789 struct mb862xxfb_par *par = fbi->par;
790 resource_size_t res_size = 1 + par->res->end - par->res->start;
791 unsigned long reg;
792
793 dev_dbg(fbi->dev, "%s release\n", fbi->fix.id);
794
795 /* display off */
796 reg = inreg(disp, GC_DCM1);
797 reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E);
798 outreg(disp, GC_DCM1, reg);
799
800 /* disable interrupts */
801 outreg(host, GC_IMASK, 0);
802
803 free_irq(par->irq, (void *)par);
804 irq_dispose_mapping(par->irq);
805
806 device_remove_file(&ofdev->dev, &dev_attr_dispregs);
807
808 unregister_framebuffer(fbi);
809 fb_dealloc_cmap(&fbi->cmap);
810
811 iounmap(par->mmio_base);
812 iounmap(par->fb_base);
813
814 dev_set_drvdata(&ofdev->dev, NULL);
815 release_mem_region(par->res->start, res_size);
816 framebuffer_release(fbi);
817 return 0;
818 }
819
820 /*
821 * common types
822 */
823 static struct of_device_id __devinitdata of_platform_mb862xx_tbl[] = {
824 { .compatible = "fujitsu,MB86276", },
825 { .compatible = "fujitsu,lime", },
826 { .compatible = "fujitsu,MB86277", },
827 { .compatible = "fujitsu,mint", },
828 { .compatible = "fujitsu,MB86293", },
829 { .compatible = "fujitsu,MB86294", },
830 { .compatible = "fujitsu,coral", },
831 { /* end */ }
832 };
833
834 static struct platform_driver of_platform_mb862xxfb_driver = {
835 .driver = {
836 .name = DRV_NAME,
837 .owner = THIS_MODULE,
838 .of_match_table = of_platform_mb862xx_tbl,
839 },
840 .probe = of_platform_mb862xx_probe,
841 .remove = __devexit_p(of_platform_mb862xx_remove),
842 };
843 #endif
844
845 #if defined(CONFIG_FB_MB862XX_PCI_GDC)
846 static int coralp_init(struct mb862xxfb_par *par)
847 {
848 int cn, ver;
849
850 par->host = par->mmio_base;
851 par->i2c = par->mmio_base + MB862XX_I2C_BASE;
852 par->disp = par->mmio_base + MB862XX_DISP_BASE;
853 par->cap = par->mmio_base + MB862XX_CAP_BASE;
854 par->draw = par->mmio_base + MB862XX_DRAW_BASE;
855 par->geo = par->mmio_base + MB862XX_GEO_BASE;
856 par->pio = par->mmio_base + MB862XX_PIO_BASE;
857
858 par->refclk = GC_DISP_REFCLK_400;
859
860 if (par->mapped_vram >= 0x2000000) {
861 /* relocate gdc registers space */
862 writel(1, par->fb_base + MB862XX_MMIO_BASE + GC_RSW);
863 udelay(1); /* wait at least 20 bus cycles */
864 }
865
866 ver = inreg(host, GC_CID);
867 cn = (ver & GC_CID_CNAME_MSK) >> 8;
868 ver = ver & GC_CID_VERSION_MSK;
869 if (cn == 3) {
870 unsigned long reg;
871
872 dev_info(par->dev, "Fujitsu Coral-%s GDC Rev.%d found\n",\
873 (ver == 6) ? "P" : (ver == 8) ? "PA" : "?",
874 par->pdev->revision);
875 reg = inreg(disp, GC_DCM1);
876 if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E)
877 par->pre_init = 1;
878
879 if (!par->pre_init) {
880 outreg(host, GC_CCF, GC_CCF_CGE_166 | GC_CCF_COT_133);
881 udelay(200);
882 outreg(host, GC_MMR, GC_MMR_CORALP_EVB_VAL);
883 udelay(10);
884 }
885 /* Clear interrupt status */
886 outreg(host, GC_IST, 0);
887 } else {
888 return -ENODEV;
889 }
890
891 mb862xx_i2c_init(par);
892 return 0;
893 }
894
895 static int init_dram_ctrl(struct mb862xxfb_par *par)
896 {
897 unsigned long i = 0;
898
899 /*
900 * Set io mode first! Spec. says IC may be destroyed
901 * if not set to SSTL2/LVCMOS before init.
902 */
903 outreg(dram_ctrl, GC_DCTL_IOCONT1_IOCONT0, GC_EVB_DCTL_IOCONT1_IOCONT0);
904
905 /* DRAM init */
906 outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD);
907 outreg(dram_ctrl, GC_DCTL_SETTIME1_EMODE, GC_EVB_DCTL_SETTIME1_EMODE);
908 outreg(dram_ctrl, GC_DCTL_REFRESH_SETTIME2,
909 GC_EVB_DCTL_REFRESH_SETTIME2);
910 outreg(dram_ctrl, GC_DCTL_RSV2_RSV1, GC_EVB_DCTL_RSV2_RSV1);
911 outreg(dram_ctrl, GC_DCTL_DDRIF2_DDRIF1, GC_EVB_DCTL_DDRIF2_DDRIF1);
912 outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES);
913
914 /* DLL reset done? */
915 while ((inreg(dram_ctrl, GC_DCTL_RSV0_STATES) & GC_DCTL_STATES_MSK)) {
916 udelay(GC_DCTL_INIT_WAIT_INTERVAL);
917 if (i++ > GC_DCTL_INIT_WAIT_CNT) {
918 dev_err(par->dev, "VRAM init failed.\n");
919 return -EINVAL;
920 }
921 }
922 outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD_AFT_RST);
923 outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES_AFT_RST);
924 return 0;
925 }
926
927 static int carmine_init(struct mb862xxfb_par *par)
928 {
929 unsigned long reg;
930
931 par->ctrl = par->mmio_base + MB86297_CTRL_BASE;
932 par->i2c = par->mmio_base + MB86297_I2C_BASE;
933 par->disp = par->mmio_base + MB86297_DISP0_BASE;
934 par->disp1 = par->mmio_base + MB86297_DISP1_BASE;
935 par->cap = par->mmio_base + MB86297_CAP0_BASE;
936 par->cap1 = par->mmio_base + MB86297_CAP1_BASE;
937 par->draw = par->mmio_base + MB86297_DRAW_BASE;
938 par->dram_ctrl = par->mmio_base + MB86297_DRAMCTRL_BASE;
939 par->wrback = par->mmio_base + MB86297_WRBACK_BASE;
940
941 par->refclk = GC_DISP_REFCLK_533;
942
943 /* warm up */
944 reg = GC_CTRL_CLK_EN_DRAM | GC_CTRL_CLK_EN_2D3D | GC_CTRL_CLK_EN_DISP0;
945 outreg(ctrl, GC_CTRL_CLK_ENABLE, reg);
946
947 /* check for engine module revision */
948 if (inreg(draw, GC_2D3D_REV) == GC_RE_REVISION)
949 dev_info(par->dev, "Fujitsu Carmine GDC Rev.%d found\n",
950 par->pdev->revision);
951 else
952 goto err_init;
953
954 reg &= ~GC_CTRL_CLK_EN_2D3D;
955 outreg(ctrl, GC_CTRL_CLK_ENABLE, reg);
956
957 /* set up vram */
958 if (init_dram_ctrl(par) < 0)
959 goto err_init;
960
961 outreg(ctrl, GC_CTRL_INT_MASK, 0);
962 return 0;
963
964 err_init:
965 outreg(ctrl, GC_CTRL_CLK_ENABLE, 0);
966 return -EINVAL;
967 }
968
969 static inline int mb862xx_pci_gdc_init(struct mb862xxfb_par *par)
970 {
971 switch (par->type) {
972 case BT_CORALP:
973 return coralp_init(par);
974 case BT_CARMINE:
975 return carmine_init(par);
976 default:
977 return -ENODEV;
978 }
979 }
980
981 #define CHIP_ID(id) \
982 { PCI_DEVICE(PCI_VENDOR_ID_FUJITSU_LIMITED, id) }
983
984 static struct pci_device_id mb862xx_pci_tbl[] __devinitdata = {
985 /* MB86295/MB86296 */
986 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALP),
987 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALPA),
988 /* MB86297 */
989 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CARMINE),
990 { 0, }
991 };
992
993 MODULE_DEVICE_TABLE(pci, mb862xx_pci_tbl);
994
995 static int __devinit mb862xx_pci_probe(struct pci_dev *pdev,
996 const struct pci_device_id *ent)
997 {
998 struct mb862xxfb_par *par;
999 struct fb_info *info;
1000 struct device *dev = &pdev->dev;
1001 int ret;
1002
1003 ret = pci_enable_device(pdev);
1004 if (ret < 0) {
1005 dev_err(dev, "Cannot enable PCI device\n");
1006 goto out;
1007 }
1008
1009 info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev);
1010 if (!info) {
1011 dev_err(dev, "framebuffer alloc failed\n");
1012 ret = -ENOMEM;
1013 goto dis_dev;
1014 }
1015
1016 par = info->par;
1017 par->info = info;
1018 par->dev = dev;
1019 par->pdev = pdev;
1020 par->irq = pdev->irq;
1021
1022 ret = pci_request_regions(pdev, DRV_NAME);
1023 if (ret < 0) {
1024 dev_err(dev, "Cannot reserve region(s) for PCI device\n");
1025 goto rel_fb;
1026 }
1027
1028 switch (pdev->device) {
1029 case PCI_DEVICE_ID_FUJITSU_CORALP:
1030 case PCI_DEVICE_ID_FUJITSU_CORALPA:
1031 par->fb_base_phys = pci_resource_start(par->pdev, 0);
1032 par->mapped_vram = CORALP_MEM_SIZE;
1033 if (par->mapped_vram >= 0x2000000) {
1034 par->mmio_base_phys = par->fb_base_phys +
1035 MB862XX_MMIO_HIGH_BASE;
1036 } else {
1037 par->mmio_base_phys = par->fb_base_phys +
1038 MB862XX_MMIO_BASE;
1039 }
1040 par->mmio_len = MB862XX_MMIO_SIZE;
1041 par->type = BT_CORALP;
1042 break;
1043 case PCI_DEVICE_ID_FUJITSU_CARMINE:
1044 par->fb_base_phys = pci_resource_start(par->pdev, 2);
1045 par->mmio_base_phys = pci_resource_start(par->pdev, 3);
1046 par->mmio_len = pci_resource_len(par->pdev, 3);
1047 par->mapped_vram = CARMINE_MEM_SIZE;
1048 par->type = BT_CARMINE;
1049 break;
1050 default:
1051 /* should never occur */
1052 goto rel_reg;
1053 }
1054
1055 par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram);
1056 if (par->fb_base == NULL) {
1057 dev_err(dev, "Cannot map framebuffer\n");
1058 goto rel_reg;
1059 }
1060
1061 par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len);
1062 if (par->mmio_base == NULL) {
1063 dev_err(dev, "Cannot map registers\n");
1064 ret = -EIO;
1065 goto fb_unmap;
1066 }
1067
1068 dev_dbg(dev, "fb phys 0x%llx 0x%lx\n",
1069 (unsigned long long)par->fb_base_phys, (ulong)par->mapped_vram);
1070 dev_dbg(dev, "mmio phys 0x%llx 0x%lx\n",
1071 (unsigned long long)par->mmio_base_phys, (ulong)par->mmio_len);
1072
1073 if (mb862xx_pci_gdc_init(par))
1074 goto io_unmap;
1075
1076 if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED | IRQF_SHARED,
1077 DRV_NAME, (void *)par)) {
1078 dev_err(dev, "Cannot request irq\n");
1079 goto io_unmap;
1080 }
1081
1082 mb862xxfb_init_fbinfo(info);
1083
1084 if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) {
1085 dev_err(dev, "Could not allocate cmap for fb_info.\n");
1086 ret = -ENOMEM;
1087 goto free_irq;
1088 }
1089
1090 if ((info->fbops->fb_set_par)(info))
1091 dev_err(dev, "set_var() failed on initial setup?\n");
1092
1093 ret = register_framebuffer(info);
1094 if (ret < 0) {
1095 dev_err(dev, "failed to register framebuffer\n");
1096 goto rel_cmap;
1097 }
1098
1099 pci_set_drvdata(pdev, info);
1100
1101 if (device_create_file(dev, &dev_attr_dispregs))
1102 dev_err(dev, "Can't create sysfs regdump file\n");
1103
1104 if (par->type == BT_CARMINE)
1105 outreg(ctrl, GC_CTRL_INT_MASK, GC_CARMINE_INT_EN);
1106 else
1107 outreg(host, GC_IMASK, GC_INT_EN);
1108
1109 return 0;
1110
1111 rel_cmap:
1112 fb_dealloc_cmap(&info->cmap);
1113 free_irq:
1114 free_irq(par->irq, (void *)par);
1115 io_unmap:
1116 iounmap(par->mmio_base);
1117 fb_unmap:
1118 iounmap(par->fb_base);
1119 rel_reg:
1120 pci_release_regions(pdev);
1121 rel_fb:
1122 framebuffer_release(info);
1123 dis_dev:
1124 pci_disable_device(pdev);
1125 out:
1126 return ret;
1127 }
1128
1129 static void __devexit mb862xx_pci_remove(struct pci_dev *pdev)
1130 {
1131 struct fb_info *fbi = pci_get_drvdata(pdev);
1132 struct mb862xxfb_par *par = fbi->par;
1133 unsigned long reg;
1134
1135 dev_dbg(fbi->dev, "%s release\n", fbi->fix.id);
1136
1137 /* display off */
1138 reg = inreg(disp, GC_DCM1);
1139 reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E);
1140 outreg(disp, GC_DCM1, reg);
1141
1142 if (par->type == BT_CARMINE) {
1143 outreg(ctrl, GC_CTRL_INT_MASK, 0);
1144 outreg(ctrl, GC_CTRL_CLK_ENABLE, 0);
1145 } else {
1146 outreg(host, GC_IMASK, 0);
1147 }
1148
1149 mb862xx_i2c_exit(par);
1150
1151 device_remove_file(&pdev->dev, &dev_attr_dispregs);
1152
1153 pci_set_drvdata(pdev, NULL);
1154 unregister_framebuffer(fbi);
1155 fb_dealloc_cmap(&fbi->cmap);
1156
1157 free_irq(par->irq, (void *)par);
1158 iounmap(par->mmio_base);
1159 iounmap(par->fb_base);
1160
1161 pci_release_regions(pdev);
1162 framebuffer_release(fbi);
1163 pci_disable_device(pdev);
1164 }
1165
1166 static struct pci_driver mb862xxfb_pci_driver = {
1167 .name = DRV_NAME,
1168 .id_table = mb862xx_pci_tbl,
1169 .probe = mb862xx_pci_probe,
1170 .remove = __devexit_p(mb862xx_pci_remove),
1171 };
1172 #endif
1173
1174 static int __devinit mb862xxfb_init(void)
1175 {
1176 int ret = -ENODEV;
1177
1178 #if defined(CONFIG_FB_MB862XX_LIME)
1179 ret = platform_driver_register(&of_platform_mb862xxfb_driver);
1180 #endif
1181 #if defined(CONFIG_FB_MB862XX_PCI_GDC)
1182 ret = pci_register_driver(&mb862xxfb_pci_driver);
1183 #endif
1184 return ret;
1185 }
1186
1187 static void __exit mb862xxfb_exit(void)
1188 {
1189 #if defined(CONFIG_FB_MB862XX_LIME)
1190 platform_driver_unregister(&of_platform_mb862xxfb_driver);
1191 #endif
1192 #if defined(CONFIG_FB_MB862XX_PCI_GDC)
1193 pci_unregister_driver(&mb862xxfb_pci_driver);
1194 #endif
1195 }
1196
1197 module_init(mb862xxfb_init);
1198 module_exit(mb862xxfb_exit);
1199
1200 MODULE_DESCRIPTION("Fujitsu MB862xx Framebuffer driver");
1201 MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
1202 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support